A 4.5 magnitude earthquake with an epicenter east of Berkeley shook the San Francisco bay area at 2:39 a.m. early Thursday morning.

People in Santa Cruz called in to the KSBW newsroom reporting that they felt the shaking for up to 10 seconds. Santa Cruz is about 84 miles away from the epicenter.

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Santa Clara county residents say it was so powerful that it jolted them out of bed. One San Jose resident wrote in to the newsroom, "I live in downtown San Jose and it was shaking everything so much it woke me up!"

Its depth was nearly 8 miles deep, according to the US Geological Survey.